Sector and protractor

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This sector and protractor were part of a set of brass drawing instruments made around 1740, probably by George Hearne, a scientific instrument maker based in London.

The sector has a foliate design to the hinge, trigonometrical scales and is signed on this side 'Geo: Hearne Fecit'. This side of the rectangular protractor has divisions for 1-180 and 180-1 degrees and is signed 'G Hearne Fecit'.

Hearne made large reflecting telescopes, having been instructed by the scientist John Hadley (1682-1744), the astronomer John Bradley (1693-1762) and Samuel Molyneux (1687-1728), who between them revived the reflecting telescope in the 18th century.

Record details

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• Online ID: 000-190-001-074-C
• Image Rights Holder: National Museums Scotland
• Project: National Museums Scotland
  Project description   View all records in project
• Ref: National Museums Scotland  T.1985.76
• Date: Around 1740
  c. 1740
  
• Material: Drawing instrument
  
• Dimensions:
• What: Drawing instrument
  
• Subject:
• Who: G. Hearne (Possibly the maker)
  George Hearne, London (Maker)
  
• Where: England, London
  
• Event:
• Description: Drawing instruments by George Hearne, London, c. 1740
  
• References:
  • Hambly, Maya, Drawing Instruments 1580-1980. London: Sotheby's, 1988, pp 176-7 
• Translations:
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